Because dry eye is the single most common thing that happens after LASIK.
REFRESH OPTIVE Preservative-Free Artificial Tears (60 Single-Use Vials)
Single-use, preservative-free vials — no bottle to reuse, no preservative to build up over weeks of daily drops.
- FDA's own LASIK page: "You may also be advised to use artificial tears to help lubricate the eye."
- Cleveland Clinic calls dry eye "the most common issue" after LASIK — rare cases last up to a year.
- 60 individually sealed single-use vials, 0.01 fl oz each.
The count: Only two preservative-free tears are on file for this hub, so this isn't a big-field comparison — the reason for the single-use format is a real 2023 FDA Class I recall: EzriCare and Delsam Pharma artificial tears (400,008 bottles, contaminated in a reused multi-use bottle) were tied by the CDC to 55 infections in 12 states and one death. A single-use vial can't be recontaminated the way a shared bottle can — though it isn't zero-risk either: Alcon's Systane preservative-free vials had a separate Class I recall of their own in 2024 (full record below).
One flaw (not a dealbreaker): Preservative-free single-use vials cost more per drop than a multi-use bottle — you're paying for the format the 2023 outbreak makes a real argument for, not for different drops.
Also good for less: smaller 50-vial box, same brand family ($16.08) →